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authorEric <[email protected]>2013-05-09 17:04:18 -0700
committerEric <[email protected]>2013-05-09 17:04:18 -0700
commitefbdfbe117939cd50d0252a210b9b7634de42bb4 (patch)
tree74b0bad39d3a5b25bd4199728c16c0b1a4ade703 /src/rcl_prv_config.erl
parent0d5a803a28010cc956948b614408b9d38997e9a1 (diff)
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Basic file rename from rcl to rlx
Diffstat (limited to 'src/rcl_prv_config.erl')
-rw-r--r--src/rcl_prv_config.erl186
1 files changed, 0 insertions, 186 deletions
diff --git a/src/rcl_prv_config.erl b/src/rcl_prv_config.erl
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--- a/src/rcl_prv_config.erl
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-%% -*- erlang-indent-level: 4; indent-tabs-mode: nil; fill-column: 80 -*-
-%%% Copyright 2012 Erlware, LLC. All Rights Reserved.
-%%%
-%%% This file is provided to you under the Apache License,
-%%% Version 2.0 (the "License"); you may not use this file
-%%% except in compliance with the License. You may obtain
-%%% a copy of the License at
-%%%
-%%% http://www.apache.org/licenses/LICENSE-2.0
-%%%
-%%% Unless required by applicable law or agreed to in writing,
-%%% software distributed under the License is distributed on an
-%%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-%%% KIND, either express or implied. See the License for the
-%%% specific language governing permissions and limitations
-%%% under the License.
-%%%-------------------------------------------------------------------
-%%% @author Eric Merritt <[email protected]>
-%%% @copyright 2011 Erlware, LLC.
-%%% @doc
-%%% A module that provides config parsing and support to the system
-%%% @end
-%%%-------------------------------------------------------------------
--module(rcl_prv_config).
-
--behaviour(rcl_provider).
-
-%% API
--export([init/1,
- do/1,
- format_error/1]).
-
--include_lib("relcool/include/relcool.hrl").
-
-%%%===================================================================
-%%% API
-%%%===================================================================
-
-%% @doc Required by the system, but not used in this provider
--spec init(rcl_state:t()) -> {ok, rcl_state:t()} | relcool:error().
-init(State) ->
- {ok, State}.
-
-%% @doc parse all the configs currently specified in the state,
-%% populating the state as a result.
--spec do(rcl_state:t()) ->{ok, rcl_state:t()} | relcool:error().
-do(State) ->
- case rcl_state:config_file(State) of
- [] ->
- search_for_dominating_config(State);
- undefined ->
- search_for_dominating_config(State);
- ConfigFile when erlang:is_list(ConfigFile) ->
- load_config(ConfigFile, State)
- end.
-
--spec format_error(Reason::term()) -> iolist().
-format_error({consult, ConfigFile, Reason}) ->
- io_lib:format("Unable to read file ~s: ~s", [ConfigFile,
- file:format_error(Reason)]);
-format_error({invalid_term, Term}) ->
- io_lib:format("Invalid term in config file: ~p", [Term]).
-
-%%%===================================================================
-%%% Internal Functions
-%%%===================================================================
-search_for_dominating_config({ok, Cwd}) ->
- ConfigFile = filename:join(Cwd, "relcool.config"),
- case ec_file:exists(ConfigFile) of
- true ->
- {ok, ConfigFile};
- false ->
- search_for_dominating_config(parent_dir(Cwd))
- end;
-search_for_dominating_config({error, _}) ->
- no_config;
-search_for_dominating_config(State0) ->
- {ok, Cwd} = file:get_cwd(),
- case search_for_dominating_config({ok, Cwd}) of
- {ok, Config} ->
- %% we need to set the root dir on state as well
- {ok, RootDir} = parent_dir(Config),
- State1 = rcl_state:root_dir(State0, RootDir),
- load_config(Config, rcl_state:config_file(State1, Config));
- no_config ->
- {ok, State0}
- end.
-
-%% @doc Given a directory returns the name of the parent directory.
--spec parent_dir(Filename::string()) ->
- {ok, DirName::string()} | {error, no_parent_dir}.
-parent_dir(Filename) ->
- parent_dir(filename:split(Filename), []).
-
-%% @doc Given list of directories, splits the list and returns all dirs but the
-%% last as a path.
--spec parent_dir([string()], [string()]) ->
- {ok, DirName::string()} | {error, no_parent_dir}.
-parent_dir([_H], []) ->
- {error, no_parent_dir};
-parent_dir([], []) ->
- {error, no_parent_dir};
-parent_dir([_H], Acc) ->
- {ok, filename:join(lists:reverse(Acc))};
-parent_dir([H | T], Acc) ->
- parent_dir(T, [H | Acc]).
-
-
--spec load_config(file:filename(), rcl_state:t()) ->
- {ok, rcl_state:t()} | relcool:error().
-load_config(ConfigFile, State) ->
- {ok, CurrentCwd} = file:get_cwd(),
- ok = file:set_cwd(filename:dirname(ConfigFile)),
- Result = case file:consult(ConfigFile) of
- {error, Reason} ->
- ?RCL_ERROR({consult, ConfigFile, Reason});
- {ok, Terms} ->
- lists:foldl(fun load_terms/2, {ok, State}, Terms)
- end,
- ok = file:set_cwd(CurrentCwd),
- Result.
-
--spec load_terms(term(), {ok, rcl_state:t()} | relcool:error()) ->
- {ok, rcl_state:t()} | relcool:error().
-load_terms({default_release, RelName, RelVsn}, {ok, State}) ->
- {ok, rcl_state:default_configured_release(State, RelName, RelVsn)};
-load_terms({paths, Paths}, {ok, State}) ->
- code:add_pathsa([filename:absname(Path) || Path <- Paths]),
- {ok, State};
-load_terms({providers, Providers0}, {ok, State0}) ->
- Providers1 = gen_providers(Providers0, State0),
- case Providers1 of
- {_, E={error, _}} ->
- E;
- {Providers3, {ok, State3}} ->
- {ok, rcl_state:providers(State3, Providers3)}
- end;
-load_terms({add_providers, Providers0}, {ok, State0}) ->
- Providers1 = gen_providers(Providers0, State0),
- case Providers1 of
- {_, E={error, _}} ->
- E;
- {Providers3, {ok, State1}} ->
- ExistingProviders = rcl_state:providers(State1),
- {ok, rcl_state:providers(State1, ExistingProviders ++ Providers3)}
- end;
-load_terms({skip_apps, SkipApps0}, {ok, State0}) ->
- {ok, rcl_state:skip_apps(State0, SkipApps0)};
-load_terms({overrides, Overrides0}, {ok, State0}) ->
- {ok, rcl_state:overrides(State0, Overrides0)};
-load_terms({release, {RelName, Vsn}, Applications}, {ok, State0}) ->
- Release0 = rcl_release:new(RelName, Vsn),
- case rcl_release:goals(Release0, Applications) of
- E={error, _} ->
- E;
- {ok, Release1} ->
- {ok, rcl_state:add_configured_release(State0, Release1)}
- end;
-load_terms({release, {RelName, Vsn}, {erts, ErtsVsn},
- Applications}, {ok, State}) ->
- Release0 = rcl_release:erts(rcl_release:new(RelName, Vsn), ErtsVsn),
- case rcl_release:goals(Release0, Applications) of
- E={error, _} ->
- E;
- {ok, Release1} ->
- {ok, rcl_state:add_configured_release(State, Release1)}
- end;
-load_terms({sys_config, SysConfig}, {ok, State}) ->
- {ok, rcl_state:sys_config(State, filename:absname(SysConfig))};
-load_terms({Name, Value}, {ok, State})
- when erlang:is_atom(Name) ->
- {ok, rcl_state:put(State, Name, Value)};
-load_terms(_, Error={error, _}) ->
- Error;
-load_terms(InvalidTerm, _) ->
- ?RCL_ERROR({invalid_term, InvalidTerm}).
-
--spec gen_providers([module()], rcl_state:t()) ->
- {[rcl_provider:t()], {ok, rcl_state:t()} | relcool:error()}.
-gen_providers(Providers, State) ->
- lists:foldl(fun(ProviderName, {Providers1, {ok, State1}}) ->
- {Provider, State2} = rcl_provider:new(ProviderName, State1),
- {[Provider | Providers1], State2};
- (_, E={_, {error, _}}) ->
- E
- end, {[], {ok, State}}, Providers).